Panasonic Leica DG Vario-Summilux 25-50mm F1.7 Asph hands on Review - Camera Jabber
Amazon.com : Meike 50mm F1.7 Full Frame Large Aperture Manual Focus Lens for Panasonic Lumix Sigma Leica L-Mount Mirrorless Camera Such as S1, S1R,S1H, S5, FP… : Electronics